Suction mold



April 1 1924. 1,488,545

A. KADOW SUCTION MOLD Filed March 27, 1921 Patented Apr. 1, 1924.,

' UNITED STATES PATENTVOFFICE.

AUGUST KLDOW, OF TOLEDO, OHIO, ASSIGNOR TO THE LIBBEY GLASS MANUFACTUR- ING COMPANY, OI TOLEDO, OHIO, A CORPORATION OF'OHIO.

SUCTION HOLD.

Application filed March 27, 1981.

To all whom it may concern.-

Be it known that I, AUGUST KADOW, a citizen of the United States, and a resident of Toledo, in the-county of Lucas and State of Ohio, have made an Invention Apper-' marked thereon, which form a part of this specification. Y

This invention relates to the manufacture of rings or similar articles from molten metals by suction action.

An object of my invention is the rovision of sim le means of producing artic es of the 80 class diascribed in a rapid, eflicient and inexpensive manner.

In the manufacture of articles of this character by suction action, difliculty is ex-. perienced in perfectly forming the articles ii at points remote from the inlet 0 ning of the mold and it is an object of t is invention to provide a mold which will overcome such ob'ection and produce articles in a ra id, edicient and inex ensive manner.

urther objects and a vant s of the invention will be apparent from t e following detailed description thereof.

The invention is fully described in the following specification, and while, in its 36' broader aspect, it iscapable of embodiment in numerous forms, a preferred embodiment thereof-is illustrated in the accompanying drawings, in which,-

Figure 1 is a side view of a mold embodymg the invention with a ortion of the outer slde member removed. i 2 isa central vertical section of the mo d taken on the line 2-2 in Fig. 1. Fig. 3 is a reduced erspective inner side view of one side memr of the mold. Fig. 4 is a reducedperspective view of the core member of the mold, and Fig-5' is a reduced perspective view of the inner side of the other mold member.

Referring to the drawings, 1 designates ing the outer peripheral wall of the cavit Serial Ho. 547,010.

what may be termed the body member of the mold, which is of substantially disc form and is provided at its inner side with a cavity 2 o circular form where rings or members of circular formare to be molded. A cover or outer side member 3 fits over or against the cavity side of the body mem her 1 to close the cavity 2, being secured to the bod member by screws 4. The opposing walls of the cavity 2, which are formed by the members 1 and 3, are parallel or substantially so and a core member 5 of disc form is disposed in the cavity with its opposite sides in abutment with said opposed walls of the cavity. A stud 6 projects centrally from the'core 5 into a holding opening 7 provided in the bod member 1. .The core 5 is provided aroun its peripher at its outer edge with'a recess or mcut, w ich cooperates with the peripheral wall of the cavity and with the cover plate 3 to form the article moldin cavity 8 of the mold, which cavity may e of a shape and size to meet the requirements of the article to be molded. In the present instance the cavity is of endless annular form lengthwise thereof and of rectan lar form. in cross-section to adapt it to orm metal drawn therein into a ring 9.

The inlet opening to the molding cavity 8 through which metal is drawn from a molten bath is provided in one edge of the body member 1 and desi ated 10. The outer end of such opening is preferably flared outward, andthe edge of the body member 1 is preferably cut away in flattened form at the outer end of the opening, thereby mak- 2 of less thickness at, the point in whic the opening 10 is disposed.

An annular recess 11 of shallow form is provided in the bottom of the cavity 2 aroundits center, and is in communication through 's. pipe 12 with an suitable suction creating source, said pipe ing tap ed into a hole 13 in the body member. The iameter of the core 5 is slightly less than that of the cavity to provi e athin relief passage 14;"between. the two walls, and this passage is linjaiommunieation with the annular suction passage 11 through a series of channels 15 provided radially in the inner sideof the core 5. The outer side of the core is provided around its'center with an annular recess 16 which communicates with and is enlarged by an annular recess 17 in the inner side of the cover plate 3, and these recesses have communication with the suction recess I 411A mold o the d 11 through a plurality of openings 18 in the core 5 and have communication with the adjacent edge of the mold cavity through a thin relief passage 19 provided between the adjacent surfaces of the cover plate 3 and core 5.

It is evident that the suction passages 14 and 19, which are both incommunication with" a suction creating source, communicate with diagonally opposite corners of the molding cavity 8 and insure a sufiicient suction action entirely around the cavity 8 lengthwise thereof to effect a complete filling of the cavity with molten metal when the inlet openinglO is submerged in a bath of molten metal and suction is applied.

When an article has-been formed in the mold the plate 3 is removed to permit removal of the article and such removal is eflected by applying pressure to the core stud 6 through the opening 7 to force the core with the encircling article 9 outward from the cavity 2. The removal of the core member from the cavity 2 also maintains the passages 14 and 15 free from any clogging metal.

I wish itunderstood that I have merely illustrated one embodiment of my invention.

and that it is not limited to any specific form, construction or arrangement of the parts, as it is capable of numerous modifications and changes without departing from the spirit of the claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is,-

1. A mold for 'forming articles by suc-.

tion act-ion, having separable parts forming an elongated molding cavity rectangular in cross section and having dlagonally opposite edge portions of the cavity in communication with a suction creating source.

2. A mold for. forming articles by suction action, having separable parts form ing an annular molding cavity angular in cross section and having diagonally opposite edge portions of the cavity in communication with a suction creating source.

3. A mold of the class described, having separable parts forming a circular molding cavity of relatively small dimensions in cross section, and providing thin passages leading from the dia onally opposite edges of the cavity throng out substantially its entire length and in communication with. a

suction creatin source.

Lanes separable members forming a cavity in communication with a suction creating source, a core member mounted in the cavity and cooperating with the separable members to form a circular molding cavity having an inlet opening at one edge, the core member also cooperating with the other members to form thin suction passages between port-ions of the first cavity in communication with the suction source and transversely spaced portions of the molding cavity.

5. A moldof the class described, having separable body and cover members cooperating to form a cavity, a core removabl mounted in the cavity and cooperating portions of the body and cover members to form a molding cavity aroundthe peripheral edge of the core member which molding cavity has an inlet openin at one edge, the core member also cooperatmg with the body and cover members to form thin suction passages from transversely spaced portions of the molding cavity and continuing substantially throughout the length of such cavit with the passages in communication with a suction creating source through portions of the first cavity.

6. A mold of the class described, having separable body and cover members forming a cavity, a core member removably fitting in the cavity and having a peripheral edge thereof recessed to cooperate with portions of the body and cover members to form a molding cavity around at least a portion of the core member, the moldin cavity having an inlet opening at one si e through the body member, the core member also cooperating with the body and cover members to form thin suction passages leading from diagonally opposite corner portions of the mold cavity substantially coextensive with its length and having communication with a suction creating source.

7. A mold of the class described, having separable body and cover members cooperatmg to form'a circular cavity with an inlet opening therethrough at one side edge thereof, a pipe carried by one of said members for opening communication between the cavityv and a suction creating source, said cavity having an opening in its bottom, a. core mounted in the cavity and having a stud projecting into the opening, the core having a recess around its outer edge for cooperating with the body and cover memuse v I M on one side of the core, and passages through the core in communication with the suction passages on both sides.

In testimony whereof, I have hereunto signed my name to this specification.

AUGUST KADOW. 

